gpu-compute: parametrize Wavefront size

Eliminate the VSZ constant that defined the Wavefront size (in numbers of work
items); replaced it with a parameter in the GPU.py configuration script.
Changed all data structures dependent on the Wavefront size to be dynamically
sized. Legal values of Wavefront size are 16, 32, 64 for now and checked at
initialization time.

1 files changed, 20 insertions, 2 deletions

diff --git a/src/gpu-compute/gpu_dyn_inst.cc b/src/gpu-compute/gpu_dyn_inst.cc
index 2f35a983c..1806e79e4 100644
--- a/src/gpu-compute/gpu_dyn_inst.cc
+++ b/src/gpu-compute/gpu_dyn_inst.cc
@@ -42,11 +42,29 @@
 
 GPUDynInst::GPUDynInst(ComputeUnit *_cu, Wavefront *_wf,
                        GPUStaticInst *_staticInst, uint64_t instSeqNum)
-    : GPUExecContext(_cu, _wf), m_op(Enums::MO_UNDEF),
+    : GPUExecContext(_cu, _wf), addr(computeUnit()->wfSize(), (Addr)0),
+      m_op(Enums::MO_UNDEF),
       memoryOrder(Enums::MEMORY_ORDER_NONE), n_reg(0), useContinuation(false),
       statusBitVector(0), staticInst(_staticInst), _seqNum(instSeqNum)
 {
-    tlbHitLevel.assign(VSZ, -1);
+    tlbHitLevel.assign(computeUnit()->wfSize(), -1);
+    d_data = new uint8_t[computeUnit()->wfSize() * 16];
+    a_data = new uint8_t[computeUnit()->wfSize() * 8];
+    x_data = new uint8_t[computeUnit()->wfSize() * 8];
+    for (int i = 0; i < (computeUnit()->wfSize() * 8); ++i) {
+        a_data[i] = 0;
+        x_data[i] = 0;
+    }
+    for (int i = 0; i < (computeUnit()->wfSize() * 16); ++i) {
+        d_data[i] = 0;
+    }
+}
+
+GPUDynInst::~GPUDynInst()
+{
+    delete[] d_data;
+    delete[] a_data;
+    delete[] x_data;
 }
 
 void